For $20 you can SuperSize your next paid roundtrip on Northwest Airlines® , Northwest Airlink, or KLM Royal Dutch Airlines and earn an additional 1,000 Bonus Miles*. These Bonus Miles are in addition to the regular credited flight miles you will earn for your paid travel.

With the help of Northwest Airlines and the WorldPerks SuperSize promotion, you'll get connected to award travel even faster!

* All flight segments within the paid roundtrip must be operated by Northwest, Northwest Airlink or KLM Royal Dutch Airlines to earn the SuperSize mileage credit. Bonus Miles are banked miles and do not count as credited flight miles toward Elite Status.